SB Acoustics SB34NRXL75-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 22Hz
• Mechanical quality factor QMS 5.50
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 508cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 75.6mm
• Winding height HVC 28mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 16.6N/A
• Motor constant Bl/√RE 6.67N/√W
• Air gap height HAG 8mm
• Weight 3.6kg

Diaphragm

• Effective diameter 254mm
• Effective area SD 508cm²
• Moving mass MMS 93g
• Moving mass (without air load) MMD 84.9g
• Material Norex

Suspensions

• Stiffness KMS 1.79N/mm
• Compliance CMS 560µm/N
• Equivalent volume to the compliance VAS 205L
• Mechanical resistance RMS 2.35N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 4L
• Net weight 8.9kg
• Frame material Cast aluminium